Concrete form



Jan. 20. 1925.

F. O. HELTZEL CONCRETE FORM Filed April 16, 1923 2 Sheets-Sheet 1FI/Illlff/ll/llf/ 4 GU01 Mag v Jan. 20. 1925. 1,523,961

F. o. HELTZEL CONCRETE FORM Filed April 16, 1923 w 2 Sheets-Sheet 2FiOTlELTZEL,

Elm-um 1 km;

Patented Jan. 20, 1925.

PATENT OFFICE.

FRANCIS o. nnn'rznzt, or WARREN, OHIO.

CONCRETE FORM.

Application filed April 16, 1923. Serial No. 632,370.

To all whom it may 007103772. 4 I

Be it known that I, FnANois O. I-Inurznn, a citizen of'the UnitedStates, residing at lVarren, in the county of Trumbull and State ofOhio, have invented certain new and useful Improvements Forms, of whichthe following is a speclfication, reference being had therein to theaccompanying drawing. The present invention relates to concrete forms,and more particularly to road forms using rails for defining the edgesof a con-:.

crete road, sidewalk, or the like, this invention being an improvementover the concrete form disclosed in my copending application serial No.543,868, filed March 15, 1922.

One of the objects of the invention'is the provision of a novel stakereceiving member carried by the rail.

Another object is to improve the means for joining and securing the railends together, whereby to obtain more secure and rigid joints,-and alsoenabling each end of each rail to be fastened in place on the ground bymeans of a stake which also as sists in fastening the rails together.

With the foregoing and other objects in view, which will be apparent asthe descrip-v tion proceeds, the invention resides ,in the constructionand arrangement of parts, as hereinafter described and claimed, it beingunderstood that changes can be made within the scope of what is claimed,without 'departing from the spirit of the invention.

The invention is illustrated in the accompanying drawings, wherein--Figure 1 is a side elevation showing the joints between three rails andan intermedi ate stake socket member, portions being broken away.

Fig. 2 is a perspective view of a complete rail,- portions being brokenaway. i

Fig. 3 is a vertical cross section on the line 33 of Fig. 1.

Fig. .l: is a horizontal section on the line 4-4 of Fig. 1.

Fig. 5 is a crosssection on the hue 5-5 .of Fig. 1.

Fig. 6 is a perspective view of one of the latches. j

The rails 10, such as are used in the construction of concrete roads,sidewalks, and the like, as shown, are of sheet metal or rolled stockhaving the upright portions or webs 11, with outturned base flanges 12at in Concrete their lower edges and the outturned top or tread flanges13 at their upper edges. Said tread flanges 13 have the depending lipsor supplementary flanges 13 for strengthening them. These rails are laidend to end and the road is built up by pouring the concrete between theopposite rails, which serve to define the edges of the road, while theflanges 13define the surface of the road at the opposite edges; Insurfacing the road, it is the practiceto run a finishing machine ordevice on the treads of the rails, thereby imposing more or less weighton the rails, and the base flanges 12 are therefore of sufficient widthto support the rails on the ground or road bed. As shown, the baseflanges 12 are somewhat wider than the a tread flanges 13.

A longitudinally slidable latch 14 is pro vided at one end of each railat the outer side of the web 11 and is slidable in a U-shaped guide 15which has the angularly extending ends or feet 16 riveted or otherwisesecured to the web of the rail near the corresponding end thereof. Thelatch 14,,as shown, is a casting or forging, and is preferably cored outto lighten the weight thereof. Said latch bears against the web 11 ofthe rail. The latch 1 1 of each rail is provided at the outer or forwardend with an outstanding lug or portion 20, and said latch has theoutwardly extending stop lug 19 at its inner or rear end to strike theguide 15 when the latch is projected for limiting the projection of thelatch. The lug or portion 20 in striking the guide 15 will also limitthe retraction of the latch.

Secured to each end portion of the rail at the ,outer side of the webthereof is a socket member 21 of loop form having the base or back plate22 riveted or otherwise secured to the web of the rail adjacent to thecorresponding end thereof. The latch 14 and portion 20 thereof aredisposed permanently in the socket member 21 at the corresponding end ofthe rail, and when the latch is projected, with the corresponding railends in abutment and alinement, the latch is projected into thecorresponding socket member of the adjacent rail. This provides aslip-joint connection between the rails, and when the rails are laid endto end, the latches are readily projected into the sockets of thecompanion rails, to maintain the rails in alinement and to support therail ends tical displacement. The latches in fittin in the socketmembers 21 which are disposed close to ether at the adjacent ends oftherails, Wlll provide a rigid connection between the rails to prevent thecorresponding end of either rail from being twisted or otherwisedisplaced out of alinement with the companion rail end. The portions ofthe latches and outer ortions of the socket members 21 are tapere androject slightly beyond the edge of the base ange 12of the rail. Thelatch 14 is offset, as at 17, to slide across the base or back plates 22of the socket members.

In order to securely fasten the rail ends together against separationand to hold them in place on the ground or road bed, the socket members21 are provided in the upper and lower portions thereof near the yoke orintermediate portions thereof with apertures 23 for receiving stakes 24,and

- said apertures and stakes are preferably of circular cross section asshown. Thus, the stakes 24 can be driven down through the members 21,which also form stake sockets, in order to anchor the rail ends in placeon the ground. The stakes also form parts of the joints for clamping therail ends together. Thus, the portion or lug 20 of the latch .hasnotches 25 to register with the apertures 23 of the corresponding latchand stake socket members 21, when the latch is projected so as to fitwithin both of the companion socket members. Then, when the stakes 24are driven down through the apertures 23 they will engage in the notches25 of the latch, and the latch is forced tightly into place within themembers 21, thereby clamping the rail ends together tightly in abutment.As aresult, the joint is made perfectly rigid and secure, the latchbeing clamped within each socket member. It is preferable to have a setscrew 26 in the yoke or intermediate portion of each socket member 21 tobear against the corresponding stake and clamp the parts togetheragainst accidental loosening or separation. When the rails are laid endto end, the latches can be conveniently projected into the correspondinglatch sockets of the adjacent rails, and the stakes 24 then driven downthrough the members 21 for making the joints rigid and anchoring them tothe the rails then removed laterally from place.

ground. It will also be noted that the end of each rail is thus anchoredto the ground. In taking the rails up, the set screws 26 are loosenedand the stakes 24 withdrawn, which will permit the latches to beretracted and Each rail also has a; stake socket between the endsthereof of similar form with reference to the end socket members. Thus,the intermediate stake socketmember 27 is of loop form and has the baseor back plate 28 secured by rivets or otherwise to the web 11 of therail at the outer side thereof intermediate the ends of the rail. Theupper and lower portions. of the member 27 have the apertures 29 for thepassage of the stakes 31, and a set screw 30 is carried by the member 27to bind against the stake. This enables the intermedate portion of eachrail to be anchored in place on the ground, and the stakes 24 and 31 aredriven downwardly across the edge of the lower flange 12 of the rail.

Havin thus described the invention, what is claime as new is 1. Aconcrete form comprisin rails to be disposed end to end, socket meniberscarried by the adjacent ends of the rails, and a latch to fit withinboth socket members, both socket members and the latch having portionsfor the engagement of stakes.

2. A concrete form comprisin rails to be disposed end to end, socket memers carried by the adjacent ends of the rails, and a latch to fit inboth socket members, both socket members having apertures for thepassage of stakes and the latch having portions for the engagement ofboth stakes.

3. A concrete form comprisin rails to be disposed end to end, socket memers of loop form carried by the adjacent ends of the rails, and a latchto fit within both socket 1.-

members, said members having apertures for the downward passage ofstakes, and the latch having notches for the engagement of both stakes.

4. A concrete form rail, 9. socket member carried h each end portionthereof, and a latch sli able in one socket member to be projected intothe corresponding socket member of another similar rail, both socketmembers at the ends of the rail having stake-receiving apertures.

5. A concrete form rail, socket members carried b the rail at both endsthereof, a latch sli able in one socket'member to be projected into acorresponding socket member of another similar rail, both socket membersof the rail having stake-receiving apertures, the latch having notchesfor the engagement of stakes driven through the corresponding socketmembers, and a guide member for the latch carried by the rail.

In testimony whereof I hereunto afiix my signature.

FRANCIS o. HELTZEL.

